dosch



P. 61 C. R. DOSCH. DIISK VGRINDING MACHINE APPLICATION FILED JAN.26,1916.

l ,1 93,525, Patented Aug. 8, 1916.

2 SHEETS-SHEET 1-.

QIELE P. 6: C. R. DOSCHI DISK GRINDING MACHINE.

APPLICATION FILED JAN.26, 1916.

1 ,1 93,525., Patented Aug. 8, 1916.

2 SHEETS-SHEET 2.

lilill IIIIIIIII ,v./ En agin *fi 1 Z5 16' I? Illlll i L i '74 15 I l3.20 r 45 I 15 Z99 1 3 N i I muem cow lKDmscfie and 8 Ra wash 4,

To all whom it may concern:

En sra'rns" Arum @FFEQE.

PETER DOSCH AND CHARLES DOSCH, F STRATFORD, CONNECTICUT.

DISK-GRINDING MACHINE.

Be it known that we, PETER DosoH and CHARLES R. DosoH, b'oth citizens ofthe United States, residing at the town of Strat- An important objectresides in the novel mounting of the diskon the motor shaft whereby theformer is easily removable from the shaft and is adaptedto .be firmlyattached without interrupting the abrading surface as by screws or boltsemployed in attaching the disk.

A further object is to provide a dust collector which will ofthegrinding disk and also constitute a support for the work table.

and claimed, reference Another aim resides in mounting or supporting thework table so that it may be swung or adjusted vertically with its inneredge always close to the grinding disk.

Theinvention further resides in the features of constructi on,arrangements and combinations of parts hereinafter described being hadto the accompanying drawings wherein:

Figure 1 shows the preferred form of the invention in top plan; Fig; 2illustrates the same in front eleva tion; Fig. 3 is a side elevation ofthe machine showing in dotted line an adjustment which the table iscapable of making; Fig. 4 is a vertical section through the dustcollector taken along line 4-4 of Fig. 3; Fig. 5 is a vertical sectionthrough the grinding disk and its mounting; and Fig. 6 is a rear view ofthe cheek plate to which the grinding disk is attached.

Referring more in detail to the drawings, the dust collector 1 issuspended from the base 2v of a motor 3 which latter is preferablyelectrical.

The shaft 4 of the motor has fixed to one end the hub 5 of'a cheek plate6 which latter is formed with a concentric series of key-hole-shapedopenings each consisting of Specification of Letters Patent.

to that type of mahouse the lower portion Patented Aug. 8, mile.

Application filed January 26, 1916. Serial No. 74,327.

- an entrance or escape portion 7 and a restricted slotportion 8.

The grinding disk 9 has its active face 10, preferably in the form ofsand paper or emery cloth, adhesively or otherwise secured thereto,while to the rear face and extending axially therefrom are a series ofthreaded pins 11 carrying nuts 12. These nuts, which have broad,washer-like,.bearing faces 12,

are of sufficient size trance openings moved into the slots 8 byrotating the disk 9 on the cheek plate 6, to clamp the rear face of thelatter to secure the disk to the Plate it;

The'rear fabe of the disk 9 is centrally retopass through the en-.cessed to receive-a hub extension 13 which further aids in supportingand centering the disk.'

Thedust' collector houses the lower portion of the grinding disk and hasits opposite sides formed with arcuate channels or recesses 14 in whichoperate inwardly extending ribs 15 of the similarly shaped brackets 15.These brackets support the 'work table 16 so that the forward edge ofthe latter is at the center about which the are shaped brackets swing.By this mountmg, the inner edge of the table is always .close to thegrinding disk, thedistance being the same throughout all adjustmentsasdepicted in Fig. 3.

A clamping rod 17 extends through the collector 1 and hason one end apermanen head or jaw 18 overlying one of the brackets 15. The oppositeend of rod 17 is threaded to receive a nut member 19 which bears on aslidable jaw 20 and, when tightened, clamps the jaws 18 and '20 againsttheir respective brackets, as clearly disclosed in Fig. 4. The jaw 20 isconveniently provided with a setting mark adapted to register with thescale on a bracket 15, Fig. 3, whereby the desired inclination of thetable may be accurately obtained.

In order to provide ample room to remove the grinding disk, the table isprovided with a detachable forward section 21 which is secured inposition by a screw 22. By thus removing this table section, sufficientspace is provided for the axial movement requisite in removing the disk.

A work guide 23 is pivoted to a block 24 for angular adjustment which isslidable in a transverse groove 25 provided in the table. This enablesthe operator to take advantage 7 and, when the pins .are,

tar

table adjustably supported on the collector and covering the latter.

7 2, In a grinding machine, a grinding disk, a dust collector arrangedtherebeneath and partly receiving the disk, a work table,

.and arc-shaped brackets adjustably supporting the table from and abovethe collector to constitute a guard and closure for the latter. I

3. In a grinding machine, a grinding disk, a dust collector arrangedther'ebeneath and having its opposite sides provided with arcuatechannels, a. ,work table, and arcuate brackets adjustably engaged in thechannels of the collector for supporting the table.

-'L. In a grinding machine, a grinding disk, a dust collector arrangedtherebeneath and having its opposite sides provided with arcuatechannels, a work table, arcuate brackets slidable in the channels of thecollector and supporting the table, and clamp means carried by thecollector for engaging with and adjustably securing the brackets.

5. In a grinding machine, a grinding disk, a dust collector arrangedtherebeneath and partly receiving the disk, said collector having itsopposite sides between which the disk is disposed provided with arcuatechannels, a work table, arcuate brackets slidable in the channels of thecollector and supp'orting the table with its forward edge subgrindingsurface at any' port, a grinding the table for arcuate stantially at afixed point above the dust collector to always overlie the latter.

6. In a grinding machine, a rotatable supdisk thereon, removable byaxial movement, and a sectional Work table arranged across and adjacentto the disk and having that section nearer the disk movable from anoperative position to provide ample room for the removal of the disk.

7. In a grinding? machine, a rotatable support, a grinding diskremovably secured thereto, a work table, means for supporting movementtransversely of the disk, and a forward removable section of thetable'adjacent the disk, whereby on the removal of said section space isprovided for the removal of the disk, said meanssupporting the table sothat the edge of the forward removable section, when the latter is in anoperative position, is substantially in a fixed point.

8. A grinding machine comprising an abrading element, a motor forrotating the element, abase plate supporting the motor and extendingforwardly thereof, an elongated transversely arranged dust collectorcarried at the forward edge of the base plate and depending therefrom,the opposite ends of the collectior being formed with.

curved seats, a work table, brackets engaged in the seats of thecollector and supporting. the table, and a clamplng device arranged onthe collector adjacent aseat thereof to impinge on the adjacent bracketto hold the table fixed.

Intestimony whereof we afiix our signatures in presence of twowitnesses.

PETER DOSCH. CHARLES R. DOSCH.

Witnesses F. W. SMITH,"Jr., M. T. LONGDEN.

